Protective wrapper for rolls and method for wrapping a roll using the same

ABSTRACT

The present document describes a protective wrapper for a roll having two ends and a length defining a distance between the two ends, the protective wrapper comprising: first one layer of paper material having two opposed edges and an edge strip at at least one of the two opposed edges of the first layer of paper material, the edge strip comprises one and only one layer of the paper material and the edge strip is for being inwardly crimped against one of the two ends; and a layer of protective material superposed to the first layer of paper material, the layer of protective material not overlapping the edge strip; wherein the first layer of paper material has a width greater than the distance between the two ends of the roll.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority under 35USC§119(e) of U.S. provisionalpatent application 61/671,199, filed on Jul. 13, 2012, the specificationof which is hereby incorporated by reference.

BACKGROUND

(a) Field

The subject matter disclosed generally relates to protective wrapper forrolls to prevent penetration by liquid, such as water. Moreparticularly, the subject matter disclosed relates to protective wrapperfor paper rolls that provides impermeable roll ends and to a method forwrapping a paper roll using the same.

(b) Related Prior Art

Newsprint and other forms of paper are manufactured and processed aslarge elongated sheets or webs. For storage and transport, the paperstock is wrapped around a core to form a cylindrical paper roll. Thepaper rolls may be very heavy. A typical paper roll may range from about25 to about 72 inches in diameter and, sometimes, as large as about 145inches or more. To protect the paper roll from moisture, the atmosphere,and physical abrasions, the paper roll itself is wrapped in a moistureproof paper for paper rolls. Typically the paper rolls are then stackedone on the other and stored on end. Specialized machinery must beemployed to automatically apply wrapping material or wrapping papers tothe large paper rolls.

Various methods have previously been used to wrap paper rolls. One ofthe most known methods has been to first wrap the roll in one or twolayers of a protective wrapping paper, with the wrapping paper extendingoutwardly beyond the end of the paper roll. Next, interior roll headers(i.e., disks formed of corrugated cardboard, chipboard, coatedchipboards, laminated Kraft paper and the like) are fitted inside thewrapping paper against the ends of the paper roll. The wrapping paper isthen crimped over the edges of the inner roll headers at the ends of thepaper rolls using a crimping wheel or any other appropriate technique. Aset of outer roll headers (i.e., somewhat thinner disks typically formedof a Kraft paper with a polymer coating on the inside surface) are thenattached to the ends of the paper roll over the crimped edges. The innerand outer roll headers and the wrapping paper are held in place andaffixed to one another through the use of an adhesive, such as a heatsensitive material (i.e., a polymer coating), on the inside surface ofthe outer roll header and/or the outward face of the inner roll header.

The outer roll headers are affixed to the ends of the paper rolls in atypical roll wrapping machine by applying heat, pressure or the like inaccordance with the properties of the adhesive material used.

However, with the technique described above, the wrapping paper is notperfectly sealed at the ends of the paper rolls, even though thewrapping paper and the inner and/or outer roll headers, if any, arerendered watertight due to polymeric coatings. Indeed, channels areformed in the crimp, i.e., crimp tunnels that allow liquid infiltrationalong the crimps when the wrapped paper rolls is in contact with liquidsduring storage and, more particularly, transport. The infiltrated liquidflows towards the inner roll header and the paper roll, causing damagesto the later. Damage typically happens during roll transportation,transit, and warehousing when environmental water (i.e., hail, sleet,snow, water puddles along the route, etc.) enters the trailer or boxcarthrough defective walls, floors, doors and the like. Infiltration occursthrough the end of the wrapped paper roll, notwithstanding use ofwatertight wrapper and headers, because wrapped roll is standing on itsend on a floor that is often getting wet during transit. Damage to thepaper rolls incurs financial burden to the purchaser, the manufacturer,and/or the transporter.

Other methods have previously been used to wrap paper rolls. Forexample, some methods provide a wrapping paper for a paper roll havingtwo opposed roll ends, where the wrapping paper includes a paper layerand at least one exposed strip having adhesive properties. These paperlayers bonded with the at least one exposed strip provide the crimpededges with a thickness which promote the formation of channels in thecrimp. In this example, the exposed strip has an adhesive layer.

For these reasons, there is certainly a need to provide an improvedprotective wrapper for paper rolls that provide impervious roll ends andthat is less expensive and still very resistant to humidity and moistureat the ends of the paper rolls and a method for wrapping a roll usingthe same.

SUMMARY

According to an embodiment, there is provide a protective wrapper for aroll having two ends and a length defining a distance between the twoends, the protective wrapper comprising: first layer of paper materialhaving two opposed edges and an edge strip at at least one of the twoopposed edges of the first layer of paper material, the edge stripcomprises one and only one layer of the paper material and the edgestrip is for being inwardly crimped against one of the two ends; and alayer of protective material superposed to the first layer of papermaterial, the layer of protective material not overlapping the edgestrip; wherein the first layer of paper material has a width greaterthan the distance between the two ends of the roll.

According to another embodiment, the layer of protective materialcomprises ethylene methacryalate, ethylene-vinyl acetate, polyurethane,polyethylene, polypropylene, high density polyethylene and anycombination thereof.

According to a further embodiment, the protective wrapper furthercomprises a second layer of paper material superposed to at least oneof: the first layer of paper material and the layer of protectivematerial, the second layer of paper material not overlapping the edgestrip.

According to yet another embodiment, the second layer of paper materialis superposed to the layer of protective material, such that the layerof protective material is not exposed.

According to another embodiment, the layer of protective material issuperposed to a side of the first layer of paper material and whereinthe protective wrapper further comprises a second layer of protectivematerial superposed to another side of the first layer of papermaterial, the second layer of protective material not overlapping theedge strip.

According to a further embodiment, at least one of: the first layer ofpaper material and the second layer of paper material includes amaterial in the group consisting of: a conventional type of flexiblepaper, a flexible type of flexible cardboard, a linerboard, a laminatedpaper, a virgin Kraft paper, a recycled paper or a combination thereof.

According to yet another embodiment, the edge strip comprises two edgestrips, each one of the two edge strips is for being inwardly crimpedagainst a corresponding one of the two ends of the roll.

According to another embodiment, the protective wrapper furthercomprises two inner roll headers installed at each one of the two endsof the roll and wherein the two edge strips are for being inwardlycrimped against the two inner roll headers.

According to a further embodiment, the protective wrapper furthercomprises an outer roll header for covering at least partially at leastone of the two ends and the crimped edge strip, thereby providingprotection against the elements at at least one of the two ends of theroll.

According to yet another embodiment, the protective wrapper furthercomprises an inner roll header to be installed at at least one of thetwo ends of the roll and wherein the edge strip is for being inwardlycrimped against the inner roll header.

According to another embodiment, the inner roll header covers at leastpartially at least one of the two ends of the roll.

According to a further embodiment, the inner roll header defines adisc-like shape.

According to yet another embodiment, the outer roll header defines adisc-like shape.

According to another embodiment, the inner roll header defines adisc-like shape and wherein the disc-like shape of the inner roll headerand the disc-like shape of the outer roll header define an equivalentdisc-like shape.

According to a further embodiment, the protective wrapper furthercomprises a layer of heat sensitive material coated to at least one of:the inner roll header and the outer roll header for linking the at leastone of: the inner roll header and the outer roll header with the crimpededge strip, the layer of heat sensitive material having a surface areanot exceeding another surface area of the ends of the roll.

According to yet another embodiment, the outer roll header comprises twoouter roll headers and the inner roll header comprises two inner rollheaders, one of each for each one of the two ends of the roll.

According to another embodiment, at least one of: the outer roll headerand the inner roll header further comprises adhesive properties forbeing linked with the crimped edge strip and wherein the adhesiveproperties are activated by heat, infrared, ultraviolet light,ultrasound, pressure, microwaves, radiowaves, X-rays or any combinationthereof.

According to another embodiment, there is provided a protective wrapperfor a roll having two ends and a length defining a distance between thetwo ends, the protective wrapper comprising: an inner roll header to beinstalled at at least one of the two ends; first layer of paper materialhaving two opposed edges and an edge strip at at least one of the twoopposed edges of the first layer of paper material, the edge stripcomprises one and only one layer of the paper material and the edgestrip is for being inwardly crimped against the inner roll header; alayer of protective material superposed to the first layer of papermaterial, the layer of protective material not overlapping the edgestrip; and an outer roll header for covering at least partially theinner roll header and the crimped edge strip, thereby providingprotection against the elements at at least one of the two ends of theroll; wherein the first layer of paper material has a width greater thanthe distance between the two ends of the roll.

According to a further embodiment, the edge strip comprises two edgestrips, each one of the two edge strips is for being inwardly crimpedagainst a respective inner roll header at a corresponding one of the twoends of the roll.

According to a further embodiment, there is provided a method forwrapping a roll having two ends and a length defining a distance betweenthe two ends, the method comprising the steps of: installing an innerroll header at at least one of the two ends of the roll; wrapping theroll with a first layer of paper material having a width greater thanthe length of the roll and an edge strip which comprises one and onlyone layer of the paper material, the first layer of paper material beingsuperposed to a layer of protective material which has a width notexceeding the distance between the two ends of the roll; and inwardlycrimping the edge strip against at least one of the two ends of the rollfor contributing to the reduction of overlapped areas and crimp tunnelson the at least one of the two ends.

Features and advantages of the subject matter hereof will become moreapparent in light of the following detailed description of selectedembodiments, as illustrated in the accompanying figures. As will berealized, the subject matter disclosed and claimed is capable ofmodifications in various respects, all without departing from the scopeof the claims. Accordingly, the drawings and the description are to beregarded as illustrative in nature and not as restrictive and the fullscope of the subject matter is set forth in the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Further features and advantages of the present disclosure will becomeapparent from the following detailed description, taken in combinationwith the appended drawings, in which:

FIG. 1 is a perspective view of a paper roll being wrapped in accordancewith an embodiment;

FIG. 2 is a perspective view, fragmented, of a roll end of the paperroll shown in FIG. 1;

FIG. 3 is a perspective view of the paper roll wrapped in the protectivewrapper of FIG. 1, where inner roll headers are juxtaposed to the rollends;

FIG. 4 is a perspective view of the protective wrapper in accordancewith another embodiment;

FIG. 5A is a cross-section view, enlarged, of a protective wrapper inaccordance with another embodiment;

FIG. 5B is a cross-section view, enlarged, of a protective wrapper inaccordance with another embodiment;

FIG. 5C is a cross-section view, enlarged, of a protective wrapper inaccordance with another embodiment;

FIG. 5D is a cross-section view, enlarged, of a protective wrapper inaccordance with another embodiment;

FIG. 5E is a cross-section view, enlarged, of a protective wrapper inaccordance with another embodiment;

FIG. 5F is a cross-section view, enlarged, of a protective wrapper inaccordance with another embodiment;

FIG. 6 is a top plan view, fragmented, of a roll end of the paper rollwrapped in the protective wrapper shown in FIG. 3; and

FIG. 7 is a perspective view of the paper roll wrapped in the protectivewrapper of FIG. 3, where outer roll headers are juxtaposed to the rollends with its respective inner roll headers.

It will be noted that throughout the appended drawings, like featuresare identified by like reference numerals.

DETAILED DESCRIPTION

In embodiments there is disclosed a protective wrapper for protectingrolls to prevent penetration by liquids, such as water, and, moreparticularly, there is disclosed a protective wrapper that providesimpervious roll ends.

Referring now to the drawings, and more particularly to FIG. 1, there isshown a perspective view of a roll 20 being wrapped in a protectivewrapper 30. For example, the roll 20 may be a conventional paper roll 20which has a longitudinal roll axis 22, a pair of longitudinallyspaced-apart roll ends 24, 25 and an outer roll surface 26 extendingbetween the roll ends 24, 25 and radially spaced along the longitudinalroll axis 22. The roll 20 is characterized by a length L₁ along thelongitudinal roll axis 22.

The roll 20 is wrapped with a first layer of paper material 40 which hasa width W₁, longer than the length L₁ of the roll 20, in a manner suchthat the longitudinal edge strips 32 a, 32 b of the first layer of papermaterial 40 extend outwardly beyond the roll ends 24, 25 or such thatonly one of the longitudinal edge strips 32 a or 32 b (32 a and 32 b onFIG. 1) of the first layer of paper material 40 extend outwardly beyondone roll end 24 or 25. The edge strips 32 a or 32 b comprises one andonly one layer of the paper material. In general, the edge strips 32 a,32 b of the protective wrapper 30 typically extend between about one toten inches and, preferably, between about two to three inches, beyondthe roll ends 24, 25 but that they can be wider or narrower.

According to an embodiment and still referring to FIG. 1, there isprovided a protective wrapper 30 for a roll 20 which has two ends 24, 25and a length L₁. The roll 20 has a disk-shaped (i.e., or any suitableshape) inner roll header 34 (FIGS. 1 and 3) installed at one of the twoends 24, 25. The protective wrapper 30 includes the first layer of papermaterial 40 which has a width W₁ greater than the length L₁ of the roll20 and an at least one edge strip 32 a and/or 32 b. Again, the edgestrips 32 a or 32 b comprises one and only one layer of the papermaterial. The protective wrapper 30 also includes a layer of protectivematerial 42 (FIG. 4 and FIGS. 5A-5F) superposed to the first layer ofpaper material 40. The layer of protective material 42 is notoverlapping the edge strip 32 a and/or 32 b. The edge strips 32 a and/or32 b are for being inwardly crimped against at least one of the two ends24, 25 and/or the inner roll header 34 of the roll 20 therebycontributing to the reduction of overlapped areas 38 (FIG. 2) and crimptunnels on the at least one of the two ends 24, 25. Indeed, since theprotective wrapper 30 includes first layer of paper material 40extending from at least one roll end 24 or 25, the protective wrapper 30is then thinner at the ends 24, 25 of the roll 20 and easier to becrimped towards one of the roll ends 24, 25 or towards one of the innerroll header 34, 35.

According to another embodiment, and now referring to FIGS. 5C, 5D, 5Eand 5F, the protective wrapper 30 may further includes a second layer ofpaper material 44 superposed to the layer of paper material 40 and thelayer of protective material 42. It is to be noted that the second layerof paper material 44 also has a width W₂ not exceeding the length L₁ ofthe roll 20 or not overlapping the edge strip 32 a and/or 32 b. Morepreferably, the second layer of paper material 44 is superposed to thelayer of protective material 42, such that the layer of protectivematerial 42 is not exposed. More particularly, as shown on FIG. 5A, thelayer of protective material 42 is superposed to the first layer ofpaper material 40 for providing two exposed edge strips 32 a, 32 b. FIG.5B shows a layer of protective material 42 superposed to the first layerof paper material 40 for providing only one exposed edge strip 32 a.FIG. 5C shows a layer of protective material 42 superposed to the firstlayer of paper material 40 and a second layer of paper material 44superposed to the layer of protective material 42 for providing twoexposed edge strips 32 a, 32 b. FIG. 5D shows a layer of protectivematerial 42 superposed to the first layer of paper material 40 and asecond layer of protective material 45 superposed to the first layer ofpaper material 40 for providing two exposed edge strips 32 a, 32 b. Onthe other end, FIG. 5E shows a layer of protective material 42superposed to the first layer of paper material 40 and a second layer ofpaper material 44 superposed to the layer of protective material 42 forproviding only one exposed edge strip 32 a. FIG. 5F shows a layer ofprotective material 42 superposed to the first layer of paper material40 and a second layer of protective material 45 superposed to the firstlayer of paper material 40 for providing only one exposed edge strip 32a.

According to another embodiment, the layer of protective material and/orthe second layer of protective material may be made of ethylenemethacryalate (i.e., EMA), ethylene-vinyl acetate (i.e., EVA),polyurethane, polyethylene, polypropylene, high density polyethylene,and any other suitable protective material. The layer of protectivematerial and the second layer of protective material can also be amultilayered material such as EMA/polyethylene, EVA/polyethylene,polyethylene/high density polyethylene and the like.

According to an embodiment, the first layer of paper material 40 and thesecond layer of paper material 44 are in the group consisting of,without limitation, any conventional type of flexible paper orcardboard, laminated paper, virgin Kraft paper, recycled paper, anycombination, and the like.

According to an embodiment, and as shown on FIGS. 1, 3, 5A, 5C, 5D and7, the protective wrapper 30 defines two edge strips 32 a, 32 b. Eachone of the edge strips 32 a, 32 b is for being inwardly crimped againsta respective inner roll header 34 at a corresponding one of the two ends24, 25 of the roll 20. This contributes to the reduction of overlappedareas 38 (FIGS. 2 and 6) and crimp tunnels on the two ends 24, 25 formedbecause of the crimped edge strips 32 a, 32 b.

According to another embodiment and referring now to FIG. 3, it is shownthat the protective wrapper 30 may further include an inner roll header34 for covering at least partially at least one of the two ends 24, 25of the roll 20.

According to another embodiment and referring now to FIG. 7, theprotective wrapper 30 may further include an outer roll header 35 forcovering at least partially the inner roll header 34 and the crimpededge strip 48 (FIGS. 2, 6 and 7) for providing protection against theelements at at least one of the two ends 24, 25 of the roll 20. It is tobe noted that the protective wrapper 30 may only include one of theinner and outer roll headers 34, 35 at only one of the roll ends 24, 25.

According to another embodiment and still referring to FIGS. 3, 6 and 7,there is shown that at least one of the inner roll header 34 and theouter roll header 35 defines a disc-like shape. More particularly, theinner roll header 34 and the outer roll header 35 define a disc-likeshape. The disc-like shape of the inner roll header 34 and the disc-likeshape of the outer roll header 35 may define an equivalent disc-likeshape. It is to be noted that the inner and outer roll headers 34, 35may define any other suitable shape and/or configuration such as toreceive the edge strips 32 a and/or 32 b or the protective wrapper 30.

According to another embodiment, there is shown that the protectivewrapper 30 may further include a layer of heat sensitive material (notshown) coated to at least one of the inner roll header 34 and the outerroll header 35 for linking the at least one of the inner roll header 34and the outer roll header 35 with the crimped edge strip 48. It is to benoted that the layer of heat sensitive material (not shown) has asurface area not exceeding another surface area defined by the ends 24,25 of the roll 20.

According to another embodiment, the protective wrapper includes twoouter roll headers 35 and two inner roll headers 34, one of each foreach one of the two ends 24, 25 of the roll 20.

According to an embodiment, at least one of the outer roll header 35 andthe inner roll header 34 further include adhesive properties for beinglinked with the crimped edge strip 48. The adhesive properties may beactivated, without limitations, by heat, infrared, ultraviolet light,ultrasound, pressure, microwaves, radiowaves, X-rays, any combination,and the like.

According to another embodiment, a method for wrapping a roll 20 havingtwo ends 24, 25 and a length L₁ includes a step of installing an innerroll header 34 at at least one of the two ends 24 and/or 25 of the roll20. The method may also include a step of wrapping the roll 20 withfirst layer of paper material 40 having a width W₁ greater than thelength L₁ of the roll 20 and an edge strip 32 a or 32 b. Again, the edgestrips 32 a or 32 b comprises one and only one layer of the papermaterial. It is to be mentioned that the first layer of paper material40 is superposed to a layer of protective material 42 which has a widthW₂ not exceeding the length L₁ of the roll 20. The method may alsoinclude the step of inwardly crimping the edge strip 32 a or 32 bagainst at least one of the two ends 24 or 25 of the roll 20 forcontributing to the reduction of overlapped areas 38 and crimp tunnelson the at least one of the two ends 24 or 25.

According to an embodiment, the method may further include the step ofinstalling an outer roll header 35 at at least one of the two ends 24,25 of the roll 20 and on the crimped edge strip 48 for providingprotection against the elements at at least one of the two ends 24and/or 25 of the paper roll 20.

The edge strips 32 a and 32 b may be crimped using a crimping wheelwhich hammers the edge strips 32 a and 32 b onto the ends 24 and/or 25of the roll 20. It will be appreciated that any other suitable techniquecan be used to crimp the extending edge strips 32 a, 32 b. Each of theseedge strips 32 a and 32 b of the protective wrapper 30 overlap ontoitself on the roll ends 24 during the crimping procedure. As the edgestrips 32 a and 32 b are crimped over the roll ends 24, ridges 36 areproduced and part of the protective wrapper 30 overlaps onto itselfforming overlapped areas 38 (FIG. 2). Crimp tunnels (not shown) aredefined between the overlapped areas 38 of protective wrapper 30. If notproperly sealed, the crimp tunnels liquid infiltration towards the roll20, causing damages to the later. Indeed, the outer roll header 35 isthen secured to the roll ends 24 over the crimped edge strips 32 a and32 b to complete the protection of the roll 20.

Referring now to FIG. 3, it will be seen another embodiment, where theroll 20 is wrapped into the protective wrapper 30. Either before orafter the protective wrapper 30 has been applied to the roll 20, innerroll headers 34 have been juxtaposed to the roll ends 24. The edgestrips 32 a and 32 b extend beyond the inner roll headers 34. Theextending edge strip 32 a and 32 b are crimped over the inner rollheaders 34. The protective wrapper 30 and the inner roll headers 34 forman integral part in the protection of the roll 20.

Additionally, the inner and outer roll headers 34, 35 may be made of,without limitation, linerboard corrugated cardboard, chipboard, orlaminated Kraft paper, for example. The inner and outer roll headers 34,35 can include adhesive properties on one face, or on both faces.Usually, the adhesive is found on the face in contact with the crimpededge strips 48. More particularly, the inner roll header 34 may be madeof chipboard or of a corrugated cardboard. One the other hand, the outerroll header 35 may be made of a linerboard coated with a polyethylene(i.e., low density and/or high density) or coated with a polypropylenemixed with a low density polyethylene.

The layer of a heat sensitive material (not shown) may include, withoutlimitations, EMA, EVA, polyurethane, polyethylene, polypropylene, highdensity polyethylene, and any other suitable heat sensitive material.The layer of a heat sensitive material (not shown) can also be amultilayered material such as EMA/polyethylene, EVA/polyethylene,polyethylene/high density polyethylene, and the like.

The layer of adhesive material (not shown) can be applied to the innerand outer roll headers 34, 35 by extrusion or water coating, solventless coating, heating process (or 100% solid coating, spraying or anyother suitable technique). It is to be mentioned that the inner and/orouter roll headers 34, 35 may have the same surface area than thesurface area defined by the ends of the paper roll 20. For example, theroll 20, and the inner and/or outer roll header 34, 35 may have adiameter of 48 inches.

For protecting the roll 20 from external moisture, the atmosphere, andphysical abrasions, the protective wrapper 30 can have moisture proofproperties along its width W₁. The layer of protective material 42 canbe selected to provide the moisture proof properties to the protectivewrapper 30. In that case, the layer of protective material 42 can coverthe protective wrapper 30 along the entire length L₁ of the roll 20.

Referring now to FIG. 6, it will be seen that once the roll 20 iswrapped in the protective wrapper 30, the edge strips 32 a is crimpedover inner roll headers 34, juxtaposed to the roll ends 24. Asmentioned, crimping the edge strips 32 a and 32 b over the inner rollheaders 34 reduces the overlapped areas and crimp tunnels on theprotective wrapper 30, between the overlapped areas 38 since there isonly one and only one layer of paper material 40 forming the edge strip32 a or 32 b.

As for the previously described embodiments, when folded toward the rollends 24, 25 the overlapped areas 38 of the protective wrapper 30 are inpaper to adhesive contact with the inner and/or outer roll headers 34,35, thereby providing improved barrier properties to elements of theexternal environment.

The adhesive properties of the inner and/or outer roll headers 34, canbe activated by any suitable technique. For example, it can be activatedby heat, infrared, ultraviolet light, ultrasound, pressure, microwaves,radiowaves, X-rays and any other suitable source to activate adhesives.As mentioned above, the inner and outer roll headers 34, 35 can beplaced on one end 24 or 25, or on both ends 24 and 25 of the roll 20.

The temperature for the activation of the layer of heat sensitivematerial (not shown), the pressure applied, and the time required toobtain bonds depend on the nature of the adhesive material and the papermaterial used. For example, without being limitative, the temperaturecan vary between 325-450° F., the pressing time can vary between 1-40seconds, and the heating time can vary between 5-60 seconds.

The roll ends 24, 25 along the lengths of the crimped edge strips 48, ofthe wrapped rolls 20 obtained with the protective wrapper 30 describedabove is watertight. This prevents liquid infiltration along the crimpededge strips 48.

The roll 20 can be any type of rolled paper including coated printingpaper. However, it will appreciate that the above described protectivewrapper 30 can be applied to any rolled material that needs to bewrapped and protected from liquids and/or moisture infiltration.

The protective wrapper 30 can be manufactured on existing roll wrapextruders, laminators, extruders and coater-laminators and can beapplied to the roll 20 with existing roll wrapping equipment.

It will be appreciate that the roll 20 can be wrapped one turn or moreby the protective wrapper 30, depending upon the physical properties ofthe protective wrapper 30. In an embodiment, only one edge strip 32 a or32 b is crimped over an end 24 or 25 of the roll, the end 24 or 25 onwhich the corresponding edge strip 32 a or 32 b is crimped may be theone in contact with the floor during storage and transport.

The embodiments described above are intended to be exemplary only.Several alternatives are possible. For example, it is possible to wrapthe roll 20 without using one of or both inner and outer roll headers34, 35. The protective wrapper 30 could be used to protect variousmoisture sensitive articles not only paper rolls 20.

While preferred embodiments have been described above and illustrated inthe accompanying drawings, it will be evident to those skilled in theart that modifications may be made without departing from thisdisclosure. Such modifications are considered as possible variantscomprised in the scope of the disclosure.

1. A protective wrapper for a roll having two ends and a length defininga distance between the two ends, the protective wrapper comprising: afirst layer of paper material having two opposed edges and an edge stripat at least one of the two opposed edges of the first layer of papermaterial, the edge strip comprises one and only one layer of the papermaterial and the edge strip is for being inwardly crimped against one ofthe two ends; and a layer of protective material superposed to the firstlayer of paper material, the layer of protective material notoverlapping the edge strip; wherein the layer of paper material has awidth greater than the distance between the two ends of the roll.
 2. Theprotective wrapper of claim 1, wherein the layer of protective materialcomprises ethylene methacryalate, ethylene-vinyl acetate, polyurethane,polyethylene, polypropylene, high density polyethylene and anycombination thereof.
 3. The protective wrapper of claim 1, furthercomprising a second layer of paper material superposed to at least oneof: the first layer of paper material and the layer of protectivematerial, the second layer of paper material not overlapping the edgestrip.
 4. The protective wrapper of claim 3, wherein the second layer ofpaper material is superposed to the layer of protective material, suchthat the layer of protective material is not exposed.
 5. The protectivewrapper of claim 1, wherein the layer of protective material issuperposed to a side of the first layer of paper material and whereinthe protective wrapper further comprises a second layer of protectivematerial superposed to another side of the first layer of papermaterial, the second layer of protective material not overlapping theedge strip.
 6. The protective wrapper of claim 3, wherein at least oneof: the first layer of paper material and the second layer of papermaterial includes a material in the group consisting of: a conventionaltype of flexible paper, a flexible type of flexible cardboard, alinerboard, a laminated paper, a virgin Kraft paper, a recycled paper ora combination thereof.
 7. The protective wrapper of claim 1, wherein theedge strip comprises two edge strips, each one of the two edge strips isfor being inwardly crimped against a corresponding one of the two endsof the roll.
 8. The protective wrapper of claim 7, further comprisingtwo inner roll headers installed at each one of the two ends of the rolland wherein the two edge strips are for being inwardly crimped againstthe two inner roll headers.
 9. The protective wrapper of claim 1,further comprising an outer roll header for covering at least partiallyat least one of the two ends and the crimped edge strip, therebyproviding protection against the elements at at least one of the twoends of the roll.
 10. The protective wrapper of claim 1, furthercomprising an inner roll header to be installed at at least one of thetwo ends of the roll and wherein the edge strip is for being inwardlycrimped against the inner roll header.
 11. The protective wrapper ofclaim 10, wherein the inner roll header covers at least partially atleast one of the two ends of the roll.
 12. The protective wrapper ofclaim 10, wherein the inner roll header defines a disc-like shape. 13.The protective wrapper of claim 9, wherein the outer roll header definesa disc-like shape
 14. The protective wrapper of claim 13, wherein theinner roll header defines a disc-like shape and wherein the disc-likeshape of the inner roll header and the disc-like shape of the outer rollheader define an equivalent disc-like shape.
 15. The protective wrapperof claim 14, further comprising a layer of heat sensitive materialcoated to at least one of: the inner roll header and the outer rollheader for linking the at least one of: the inner roll header and theouter roll header with the crimped edge strip, the layer of heatsensitive material having a surface area not exceeding another surfacearea of the ends of the roll.
 16. The protective wrapper of claim 9,wherein the outer roll header comprises two outer roll headers and theinner roll header comprises two inner roll headers, one of each for eachone of the two ends of the roll.
 17. The protective wrapper of claim 9,wherein at least one of: the outer roll header and the inner roll headerfurther comprises adhesive properties for being linked with the crimpededge strip and wherein the adhesive properties are activated by heat,infrared, ultraviolet light, ultrasound, pressure, microwaves,radiowaves, X-rays or any combination thereof.
 18. A protective wrapperfor a roll having two ends and a length defining a distance between thetwo ends, the protective wrapper comprising: an inner roll header to beinstalled at at least one of the two ends; a first layer of papermaterial having two opposed edges and an edge strip at at least one ofthe two opposed edges of the first layer of paper material, the edgestrip comprises one and only one layer of the paper material and theedge strip is for being inwardly crimped against the inner roll header;a layer of protective material superposed to the first layer of papermaterial, the layer of protective material not overlapping the edgestrip; and an outer roll header for covering at least partially theinner roll header and the crimped edge strip, thereby providingprotection against the elements at at least one of the two ends of theroll; wherein the first layer of paper material has a width greater thanthe distance between the two ends of the roll.
 19. The protectivewrapper of claim 18, wherein the edge strip comprises two edge strips,each one of the two edge strips is for being inwardly crimped against arespective inner roll header at a corresponding one of the two ends ofthe roll.
 20. A method for wrapping a roll having two ends and a lengthdefining a distance between the two ends, the method comprising thesteps of: installing an inner roll header at at least one of the twoends of the roll; wrapping the roll with a first layer of paper materialhaving a width greater than the length of the roll and an edge stripwhich comprises one and only one layer of the paper material, the firstlayer of paper material being superposed to a layer of protectivematerial which has a width not exceeding the distance between the twoends of the roll; and inwardly crimping the edge strip against at leastone of the two ends of the roll for contributing to the reduction ofoverlapped areas and crimp tunnels on the at least one of the two ends.